gstreamer/gst-uninstalled.py

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#!/usr/bin/env python3
import argparse
import json
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import os
import platform
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import re
import site
import shutil
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import subprocess
import sys
import tempfile
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from common import get_meson
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SCRIPTDIR = os.path.abspath(os.path.dirname(__file__))
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def prepend_env_var(env, var, value):
env[var] = os.pathsep + value + os.pathsep + env.get(var, "")
env[var] = env[var].replace(os.pathsep + os.pathsep, os.pathsep).strip(os.pathsep)
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def get_subprocess_env(options):
env = os.environ.copy()
PATH = env.get("PATH", "")
subprojects_path = os.path.join(options.builddir, "subprojects")
for proj in os.listdir(subprojects_path):
projpath = os.path.join(subprojects_path, proj)
if not os.path.exists(projpath):
print("Subproject %s does not exist in %s.,\n"
" Make sure to build everything properly "
"and try again." % (proj, projpath))
exit(1)
toolsdir = os.path.join(projpath, "tools")
if os.path.exists(toolsdir):
prepend_env_var(env, "PATH", toolsdir)
prepend_env_var(env, "GST_PLUGIN_PATH", projpath)
prepend_env_var(env, "GST_PLUGIN_PATH", os.path.join(SCRIPTDIR, 'subprojects',
'gst-python', 'plugin'))
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env["CURRENT_GST"] = os.path.normpath(SCRIPTDIR)
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env["GST_VALIDATE_SCENARIOS_PATH"] = os.path.normpath(
"%s/subprojects/gst-devtools/validate/data/scenarios" % SCRIPTDIR)
env["GST_VALIDATE_PLUGIN_PATH"] = os.path.normpath(
"%s/subprojects/gst-devtools/validate/plugins" % options.builddir)
env["GST_VALIDATE_APPS_DIR"] = os.path.normpath(
"%s/subprojects/gst-editing-services/tests/validate" % SCRIPTDIR)
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prepend_env_var(env, "PATH", os.path.normpath(
"%s/subprojects/gst-devtools/validate/tools" % options.builddir))
prepend_env_var(env, "PATH", os.path.join(SCRIPTDIR, 'meson'))
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env["PATH"] += os.pathsep + PATH
env["GST_VERSION"] = options.gst_version
env["GST_ENV"] = 'gst-' + options.gst_version
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env["GST_PLUGIN_SYSTEM_PATH"] = ""
env["GST_PLUGIN_SCANNER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-plugin-scanner" % options.builddir)
env["GST_PTP_HELPER"] = os.path.normpath(
"%s/subprojects/gstreamer/libs/gst/helpers/gst-ptp-helper" % options.builddir)
env["GST_REGISTRY"] = os.path.normpath(options.builddir + "/registry.dat")
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filename = "meson.build"
sharedlib_reg = re.compile(r'\.so|\.dylib|\.dll')
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typelib_reg = re.compile(r'.*\.typelib$')
if os.name is 'nt':
lib_path_envvar = 'PATH'
elif platform.system() == 'Darwin':
lib_path_envvar = 'DYLD_LIBRARY_PATH'
else:
lib_path_envvar = 'LD_LIBRARY_PATH'
meson, mesonconf, mesonintrospect = get_meson()
targets_s = subprocess.check_output([sys.executable, mesonintrospect, options.builddir, '--targets'])
targets = json.loads(targets_s.decode())
for target in targets:
filename = target['filename']
root = os.path.dirname(filename)
if typelib_reg.search(filename):
prepend_env_var(env, "GI_TYPELIB_PATH",
os.path.join(options.builddir, root))
elif sharedlib_reg.search(filename):
if target.get('type') != "shared library":
continue
if os.path.normpath("lib/gstreamer-1.0") in os.path.normpath(target.get('install_filename')):
continue
prepend_env_var(env, lib_path_envvar,
os.path.join(options.builddir, root))
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return env
def python_env(options, unset_env=False):
"""
Setup our overrides_hack.py as sitecustomize.py script in user
site-packages if unset_env=False, else unset, previously set
env.
"""
subprojects_path = os.path.join(options.builddir, "subprojects")
gst_python_path = os.path.join(SCRIPTDIR, "subprojects", "gst-python")
if not os.path.exists(os.path.join(subprojects_path, "gst-python")) or \
not os.path.exists(gst_python_path):
return False
sitepackages = site.getusersitepackages()
if not sitepackages:
return False
sitecustomize = os.path.join(sitepackages, "sitecustomize.py")
overrides_hack = os.path.join(gst_python_path, "testsuite", "overrides_hack.py")
if not unset_env:
if os.path.exists(sitecustomize):
if os.path.realpath(sitecustomize) == overrides_hack:
print("Customize user site script already linked to the GStreamer one")
return False
old_sitecustomize = os.path.join(sitepackages,
"old.sitecustomize.gstuninstalled.py")
shutil.move(sitecustomize, old_sitecustomize)
elif not os.path.exists(sitepackages):
os.makedirs(sitepackages)
os.symlink(overrides_hack, sitecustomize)
return os.path.realpath(sitecustomize) == overrides_hack
else:
if not os.path.realpath(sitecustomize) == overrides_hack:
return False
os.remove(sitecustomize)
old_sitecustomize = os.path.join(sitepackages,
"old.sitecustomize.gstuninstalled.py")
if os.path.exists(old_sitecustomize):
shutil.move(old_sitecustomize, sitecustomize)
return True
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if __name__ == "__main__":
parser = argparse.ArgumentParser(prog="gstreamer-uninstalled")
parser.add_argument("--builddir",
default=os.path.join(SCRIPTDIR, "build"),
help="The meson build directory")
parser.add_argument("--gst-version", default="master",
help="The GStreamer major version")
options, args = parser.parse_known_args()
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if not os.path.exists(options.builddir):
print("GStreamer not built in %s\n\nBuild it and try again" %
options.builddir)
exit(1)
if not args:
if os.name is 'nt':
args = [os.environ.get("COMSPEC", r"C:\WINDOWS\system32\cmd.exe")]
else:
args = [os.environ.get("SHELL", os.path.realpath("/bin/sh"))]
if "bash" in args[0]:
bashrc = os.path.expanduser('~/.bashrc')
if os.path.exists(bashrc):
tmprc = tempfile.NamedTemporaryFile(mode='w')
with open(bashrc, 'r') as src:
shutil.copyfileobj(src, tmprc)
tmprc.write('\nexport PS1="[gst-%s] $PS1"' % options.gst_version)
tmprc.flush()
# Let the GC remove the tmp file
args.append("--rcfile")
args.append(tmprc.name)
python_set = python_env(options)
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try:
exit(subprocess.call(args, env=get_subprocess_env(options)))
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except subprocess.CalledProcessError as e:
exit(e.returncode)
finally:
if python_set:
python_env(options, unset_env=True)